19989522355 has 16 divisors (see below), whose sum is σ = 26210834784. Its totient is φ = 14514094080.

The previous prime is 19989522353. The next prime is 19989522361. The reversal of 19989522355 is 55322598991.

It is not a de Polignac number, because 19989522355 - 2¹ = 19989522353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19989522355.

It is not an unprimeable number, because it can be changed into a prime (19989522353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262734 + ... + 330163.

It is an arithmetic number, because the mean of its divisors is an integer number (1638177174).

Almost surely, 2^19989522355 is an apocalyptic number.

19989522355 is a deficient number, since it is larger than the sum of its proper divisors (6221312429).

19989522355 is a wasteful number, since it uses less digits than its factorization.

19989522355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593526.

The product of its digits is 8748000, while the sum is 58.

The spelling of 19989522355 in words is "nineteen billion, nine hundred eighty-nine million, five hundred twenty-two thousand, three hundred fifty-five".